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Finding the Fourth Proportional to 408,531.65, 563,789.72 and 247,295.48

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Solution

The fourth proportional to 408,531.65, 563,789.72 and 247,295.48 is: 341,277.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,531.65 : 563,789.72 = 247,295.48 : x
  2. Step 2: Convert to fraction form
    408,531.65/563,789.72 = 247,295.48/x
  3. Step 3: Cross multiply
    408,531.65x = 563,789.72 × 247,295.48
  4. Step 4: Simplify right side
    408,531.65x = 139,422,648,189.99
  5. Step 5: Solve for x
    x = 139,422,648,189.99/408,531.65
  6. Step 6: Final answer
    x = 341,277.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.